/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/ConvexHalfEdgeStructureData.h
Get a plane for the specified Edge (NOTE: edge index, not half-edge index) EdgeIndex must be in range [0,NumEdges()) EdgePlaneIndex must be 0 or 1 return value is in range [0,NumPlanes())
int32 GetEdgePlane ( int32 EdgeIndex, int32 EdgePlaneIndex ) const